Question: Consider this grammar ( with the usual conventions ) : SlongrightarrowA | B | Alongrightarrowa BlongrightarrowA | C | longrightarrow Is B a useless variable?

Consider this grammar (with the usual conventions):
SlongrightarrowA|B|
Alongrightarrowa
BlongrightarrowA|C|
longrightarrow
Is B a useless variable?
True
False
Consider this grammar (with the usual conventions): SlongrightarrowA|B| Alongrightarrowa BlongrightarrowA|C| longrightarrow

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